U.S. patent number 11,391,342 [Application Number 17/211,382] was granted by the patent office on 2022-07-19 for variable inertia flywheel apparatus and system.
This patent grant is currently assigned to Deere & Company. The grantee listed for this patent is Deere & Company. Invention is credited to Vishal Gupta, Swapnil More, Ayoub Siddiqui.
United States Patent |
11,391,342 |
More , et al. |
July 19, 2022 |
Variable inertia flywheel apparatus and system
Abstract
A variable inertia flywheel apparatus includes a cylindrical
body member defining a longitudinal axis extending between spaced
apart front and rear faces of the body member and an arc-shaped
groove portion extending circumferentially relative to the
longitudinal axis. The arc-shaped groove portion configured to
selectively receive one or more tuning weights having a collective
mass sufficient to vary an inertial property of the cylindrical
body member between a first inertial property with the tuning
weights selectively removed from the arc-shaped groove portion, and
a second inertial property greater than the first inertial property
with the tuning weights selectively received in the arc-shaped
groove portion. A variable inertia flywheel system or assembly
includes a tuning weight and a variable inertia flywheel apparatus
including a cylindrical body member defining a circumferentially
extending arc-shaped groove portion configured to selectively
receive the tuning weight to vary the inertial property of the
cylindrical body member.
Inventors: |
More; Swapnil (Pune,
IN), Gupta; Vishal (Meerut, IN), Siddiqui;
Ayoub (Cedar Falls, IA) |
Applicant: |
Name |
City |
State |
Country |
Type |
Deere & Company |
Moline |
IL |
US |
|
|
Assignee: |
Deere & Company (Moline,
IL)
|
Family
ID: |
1000005534200 |
Appl.
No.: |
17/211,382 |
Filed: |
March 24, 2021 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F16F
15/31 (20130101) |
Current International
Class: |
F16F
15/31 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
204805428 |
|
Nov 2015 |
|
CN |
|
2666547 |
|
Mar 1992 |
|
FR |
|
Primary Examiner: Ridley; Richard W
Assistant Examiner: McGovern; Brian J
Attorney, Agent or Firm: Tucker Ellis LLP
Claims
The invention claimed is:
1. A variable inertia flywheel apparatus comprising: a cylindrical
body member defining: a longitudinal axis L extending between
spaced apart front and rear faces of the cylindrical body member;
and an arc-shaped groove portion extending circumferentially
relative to the longitudinal axis L, wherein the arc-shaped groove
portion defined by the cylindrical body member is configured to
selectively receive an associated tuning weight having a mass
sufficient to vary an inertial property of the cylindrical body
member between: a first inertial property with the associated
tuning weight selectively removed from the arc-shaped groove
portion; and a second inertial property greater than the first
inertial property with the associated tuning weight selectively
received in the arc-shaped groove portion; and a biasing member
disposed in the arc-shaped groove portion, the biasing member being
operable to hold the associated tuning weight in a predetermined
immovable position relative to the body member during use of the
flywheel apparatus.
2. The variable inertia flywheel apparatus according to claim 1,
wherein: the biasing member comprises a spring device operable to
hold first and second sets of tuning weight bodies of the
associated tuning weight in respective predetermined positions at
opposite ends of the arc-shaped groove portion.
3. The variable inertia flywheel apparatus according to claim 1,
wherein the arc-shaped groove portion defined by the cylindrical
body member comprises: an arc-shaped passageway portion defined by
the cylindrical body member and extending circumferentially
relative to the longitudinal axis L; and a fill passageway portion
defined by the cylindrical body member and extending substantially
in parallel with the longitudinal axis L, wherein the fill
passageway portion comprises: a source aperture on an outer end of
the fill passageway portion opening the fill passageway portion to
the first face of the cylindrical body member, the source aperture
being configured to receive the associated tuning weight into the
cylindrical body member; and a supply aperture on an inner end of
the fill passageway portion and in communication with the
arc-shaped passageway portion of the arc-shaped groove portion, the
supply aperture being configured to communicate the associated
tuning weight between the fill passageway portion and the
arc-shaped passageway portion of the arc-shaped groove portion.
4. The variable inertia flywheel apparatus according to claim 3,
wherein: the arc-shaped passageway portion comprises a closed
arc-shaped passageway portion in communication with the fill
passageway portion; and the supply aperture defines a sole pathway
of ingress and egress of the associated tuning weight relative to
the arc-shaped passageway portion.
5. The variable inertia flywheel apparatus according to claim 3,
wherein: the biasing member comprises a spring device, a resilient
compressible member, or a screw jack operable to hold first and
second sets of tuning weight bodies of the associated tuning weight
in predetermined immovable positions relative to the body member at
opposite ends of the arc-shaped passageway portion.
6. The variable inertia flywheel apparatus according to claim 1,
wherein the arc-shaped groove portion defined by the cylindrical
body member comprises: a first arc-shaped passageway portion
defined by the cylindrical body member and extending
circumferentially relative to the longitudinal axis L on a first
side A of a plane P bisecting the cylindrical body member and
containing the longitudinal axis L; and a second arc-shaped
passageway portion defined by the cylindrical body member and
extending circumferentially relative to the longitudinal axis L on
a second side B opposite from the first side A of the plane P
bisecting the cylindrical body member and containing the
longitudinal axis L.
7. The variable inertia flywheel apparatus according to claim 6,
wherein: the first arc-shaped passageway portion is spaced from the
longitudinal axis L by a first radius R1; and the second arc-shaped
passageway portion is spaced from the longitudinal axis L by a
second radius R2, wherein the first and second radii R1, R2 are the
same.
8. The variable inertia flywheel apparatus according to claim 6,
wherein: the first arc-shaped passageway portion is spaced from the
longitudinal axis L by a first radius R1; and the second arc-shaped
passageway portion is spaced from the longitudinal axis L by a
second radius R4, wherein the first and second radii R1, R4 are the
different.
9. The variable inertia flywheel apparatus according to claim 6,
wherein the biasing member comprises: a first biasing member
disposed in the first arc-shaped passageway portion, the first
biasing member being operable to hold first and second sets of
tuning weight bodies of the associated tuning weight in respective
immovable predetermined positions relative to the body member at
opposite ends of the first arc-shaped passageway portion; and a
second biasing member disposed in the second arc-shaped passageway
portion, the second biasing member being operable to hold third and
fourth sets of tuning weight bodies of the associated tuning weight
in respective immovable predetermined positions relative to the
body member at opposite ends of the second arc-shaped passageway
portion.
10. The variable inertia flywheel apparatus according to claim 6,
wherein the arc-shaped groove portion defined by the cylindrical
body member comprises: a first fill passageway portion defined by
the cylindrical body member and extending substantially in parallel
with the longitudinal axis L, wherein the first fill passageway
portion comprises: a first source aperture on an outer end of the
first fill passageway portion opening the first fill passageway
portion to the first face of the cylindrical body member, the first
source aperture being configured to receive first and second sets
of tuning weight bodies of the associated tuning weight into the
cylindrical body member; and a first supply aperture on an inner
end of the first fill passageway portion and in communication with
the first arc-shaped passageway portion of the arc-shaped groove
portion, the first supply aperture being configured to communicate
the first and second sets of tuning weight bodies of the associated
tuning weight between the first fill passageway portion and the
first arc-shaped passageway portion; and a second fill passageway
portion defined by the cylindrical body member and extending
substantially in parallel with the longitudinal axis L, wherein the
second fill passageway portion comprises: a second source aperture
on an outer end of the second fill passageway portion opening the
second fill passageway portion to the first face of the cylindrical
body member, the second source aperture being configured to receive
third and fourth sets of tuning weight bodies of the associated
tuning weight into the cylindrical body member; and a second supply
aperture on an inner end of the second fill passageway portion and
in communication with the second arc-shaped passageway portion of
the arc-shaped groove portion, the second supply aperture being
configured to communicate the third and fourth sets of tuning
weight bodies of the associated tuning weight between the second
fill passageway portion and the second arc-shaped passageway
portion.
11. The variable inertia flywheel apparatus according to claim 1,
wherein the arc-shaped groove portion defined by the cylindrical
body member comprises: a first arc-shaped passageway portion
defined by the cylindrical body member and extending
circumferentially relative to the longitudinal axis L on a first
side A of a plane P bisecting the cylindrical body member and
containing the longitudinal axis L, wherein the first arc-shaped
passageway portion is configured to receive first and second sets
of tuning weight bodies of the associated tuning weight; and a
second arc-shaped passageway portion defined by the cylindrical
body member and extending circumferentially relative to the
longitudinal axis L on the first side A of the plane P bisecting
the cylindrical body member and containing the longitudinal axis L,
wherein the second arc-shaped passageway portion is configured to
receive third and fourth sets of tuning weight bodies of the
associated tuning weight.
12. The variable inertia flywheel apparatus according to claim 11,
wherein: the first arc-shaped passageway portion is spaced from the
longitudinal axis L by a first radius R1; and the second arc-shaped
passageway portion is spaced from the longitudinal axis L by a
second radius R3 less than the first radius R1.
13. The variable inertia flywheel apparatus according to claim 11,
wherein: the first arc-shaped passageway portion is spaced from the
longitudinal axis L by a first radius R1; and the second arc-shaped
passageway portion is spaced from the longitudinal axis L by the
first radius R3.
14. The variable inertia flywheel apparatus according to claim 11,
further comprising: a first biasing member disposed in the first
arc-shaped passageway portion, the first biasing member being
operable to hold the first and second sets of tuning weight bodies
of the associated tuning weight in predetermined positions at
opposite ends of the first arc-shaped passageway portion; and a
second biasing member disposed in the second arc-shaped passageway
portion, the second biasing member being operable to hold the third
and fourth sets of tuning weight bodies of the associated tuning
weight in predetermined positions at opposite ends of the second
arc-shaped passageway portion.
15. The variable inertia flywheel apparatus according to claim 11,
wherein the arc-shaped groove portion defined by the cylindrical
body member comprises: a third arc-shaped passageway portion
defined by the cylindrical body member and extending
circumferentially relative to the longitudinal axis L on a second
side B opposite from the first side A of the plane P bisecting the
cylindrical body member and containing the longitudinal axis L,
wherein the third arc-shaped passageway portion is configured to
receive a third tuning weight body of the associated tuning weight;
and a fourth arc-shaped passageway portion defined by the
cylindrical body member and extending circumferentially relative to
the longitudinal axis L on the second side B of the plane P
bisecting the cylindrical body member and containing the
longitudinal axis L, wherein the fourth arc-shaped passageway
portion is configured to receive a fourth tuning weight body of the
associated tuning weight.
16. The variable inertia flywheel apparatus according to claim 15,
wherein: the first arc-shaped passageway portion is spaced from the
longitudinal axis L by a first radius R1; the second arc-shaped
passageway portion is spaced from the longitudinal axis L by a
second radius R3 less than the first radius R1, the third
arc-shaped passageway portion is spaced from the longitudinal axis
L by a third radius R2; and the fourth arc-shaped passageway
portion is spaced from the longitudinal axis L by a fourth radius
R4 less than the third radius R2.
17. The variable inertia flywheel apparatus according to claim 15,
wherein: the first radius R1 of the first arc-shaped passageway
portion and the third radius R2 of the third arc-shaped passageway
portion are the same; and the second radius R3 of the second
arc-shaped passageway portion and the fourth radius R4 of the
fourth arc-shaped passageway portion are the same.
18. The variable inertia flywheel apparatus according to claim 1,
wherein: the second inertial property of the cylindrical body
member with the associated tuning weight received in the arc-shaped
groove portion remains unchanged or otherwise fixed for any
position of the associated tuning weight along the arc-shaped
groove portion of the cylindrical body member.
19. The variable inertia flywheel apparatus according to claim 1,
wherein: the biasing member comprises a spring device, a resilient
compressible member, or a screw jack operable to hold first and
second sets of tuning weight bodies of the associated tuning weight
in respective predetermined immovable positions relative to the
body member in positions at opposite ends of the arc-shaped groove
portion.
20. A variable inertia flywheel system comprising: one or more
tuning weights; and a variable inertia flywheel apparatus
comprising: a cylindrical body member defining: a longitudinal axis
L extending between spaced apart front and rear faces of the
cylindrical body member; and an arc-shaped groove portion extending
circumferentially relative to the longitudinal axis L, wherein the
arc-shaped groove portion defined by the cylindrical body member is
configured to selectively receive the one or more tuning weights to
vary an inertial property of the cylindrical body member between: a
first inertial property with the one or more tuning weights
selectively removed from the arc-shaped groove portion; and a
second inertial property greater than the first inertial property
with the one or more tuning weights selectively received in the
arc-shaped groove portion and held in the arc-shaped groove portion
immovably relative to the body member during use of the flywheel
system.
21. The variable inertia flywheel system according to claim 20,
further comprising: a biasing member operable to hold the one or
more tuning weights in the arc-shaped groove portion immovably
relative to the body member during the use of the flywheel system.
Description
FIELD OF THE DISCLOSURE
The present disclosure is related to flywheels and, more
particularly, to flywheel apparatus having a flywheel body
configured to receive one or more tuning members that may be
selectively added onto the flywheel body for providing a flywheel
system having a variable selectable inertia, and to flywheel
systems including in combination a flywheel body and one or more
tuning members. Although the descriptions herein are directed to
flywheels disposed between an engine and a transmission of a work
vehicle such as a tractor, it is to be appreciated that the claimed
invention has a much broader range of applications including as
examples, use in stationary powered machines that use flywheels and
work vehicles of any type that use flywheels.
BACKGROUND
A flywheel is a component of an engine that connects with a
transmission component such as for example a clutch, a coupler, a
torque convertor or other similar devices to transmit power via the
transmission component to devices such as electric or hydraulic
generators, compressors, power take-off (PTO) devices and/or to
other devices such as ground engaging members of a work vehicle
such as tires or treads of a tractor for example. The inertia
inherent in a rotating flywheel helps to minimize energy
fluctuations by storing energy in the rotating flywheel mass while
energy in the overall system is in excess, and by dissipating or
paying out the stored energy to the devices when it is required by
the devices such as to drive the PTO devices and/or ground engaging
members. The inertia inherent in the rotating flywheel also helps
to minimize torsional vibrations in the crankshaft, and as such has
a tuning effect on the engine. As a result, inertia is a very
important parameter for flywheel design.
Flywheel assemblies typically also consist of ring gear to mesh
with a starter pinion and machined part. A starter motor pinion
rotates flywheel to set engine in motion at the time of ignition.
Flywheel assemblies also typically consists of interfaces for
selective connection on one side with the crankshaft of an engine
of a work vehicle or stationary equipment, and on the other and
opposite side with the transmission or other power transfer
mechanisms of the work vehicle or the stationary equipment. In some
cases different work vehicles may use the same engine and
transmission combination but may require different flywheels having
different inertia characteristics because of different applications
and/or because of the different sizes or constructions of the
different work vehicles even though the engines and transmissions
may be shared across those products. In cases such as this, an
original equipment manufacturer (OEM) might be required to
manufacture, inventory, and catalog flywheels that have different
rotating inertial mass characteristics even though the physical
interfaces to the end use devices are identical across the
different flywheels having the different inertia
characteristics.
In addition to the above, there is sometimes a need to change or
otherwise modify the inertial characteristics of a flywheel design
for different applications or when same application is intended to
be used for different transmission clutches or couplers. Quite
often these inertia changes that may be needed are not recognized
by the OEMs until after flywheel development such as during the
time period afterwards when vehicle partners continue to experiment
with couplers in the test labs or field. Some OEMs have addressed
the above problem by offering inertia rings that may be attached to
the flywheels such as by bolting or otherwise coupling the inertia
ring to the flywheel. Today, applications often settle for use of
an inertia ring located on transmission couplers which is new
development so there is some cost and lead time associated with it.
However, the inertia rings themselves present manufacturing,
inventory and sales catalog problems. They are also time consuming
and difficult to install. Sometimes it is learned that applications
require a new flywheel development. In this case several part
numbers and associated costs are added in the OEM system.
It is therefore desirable to provide a flywheel apparatus having a
flywheel body configured to receive one or more members that may be
selectively added onto the flywheel body for providing a flywheel
system having a variable selectable inertia.
It is further desirable to provide flywheel system including a
flywheel apparatus and one or more members that may be selectively
added to the flywheel apparatus for effecting selectable inertial
characteristics.
It is further desirable to provide a flywheel system having an
inertial characteristic that can be easily modified to provide a
different selected inertial characteristic.
It is further desirable to provide a flywheel system including a
flywheel body and one or more add-on inertial masses that may be
selectively added to the inertial mass of the flywheel body for
adjusting the inertial characteristics of a flywheel as may be
necessary and/or desired by adding or removing one or more of the
add-on inertial masses relative to the flywheel body.
SUMMARY
The embodiments herein provide a variable inertia flywheel
apparatus.
The embodiments herein further provide a variable inertia flywheel
system including a variable inertia flywheel apparatus and one or
more tuning weights.
The embodiments herein further provide a flywheel system having
add-on inertial masses for adjusting the inertial characteristics
of a flywheel as may be necessary and/or desired by adding or
removing one or more of the add-on inertial masses.
The embodiments herein further provide a variable inertia flywheel
apparatus having a flywheel body configured to receive one or more
members, wherein the inertia of the flywheel apparatus may be
varied as may be necessary and/or desired by adding or removing one
or more of the add-on inertial masses onto the flywheel body.
The embodiments herein further provide a variable inertia flywheel
system including one or more members and a flywheel apparatus
having a flywheel body configured to receive the one or more
members, herein the inertia of the flywheel system may be varied as
may be necessary and/or desired by adding or removing one or more
of the add-on inertial masses onto the flywheel body of the
flywheel apparatus.
In one aspect, a variable inertia flywheel apparatus is provided
including a cylindrical body member defining a longitudinal axis
extending between spaced apart front and rear faces of the
cylindrical body member, and an arc-shaped groove portion extending
circumferentially relative to the longitudinal axis, wherein the
arc-shaped groove portion is configured to selectively receive an
associated tuning weight having a mass sufficient to vary an
inertial property of the cylindrical body member between a first
inertial property with the associated tuning weight selectively
removed from the arc-shaped groove portion and a second inertial
property greater than the first inertial property with the
associated tuning weight selectively received in the arc-shaped
groove portion.
In any of the embodiments herein, the tuning weight includes one or
more tuning weight bodies.
In any of the embodiments herein, the variable inertia flywheel
apparatus further includes a biasing member disposed in the
arc-shaped groove portion, wherein the biasing member is operable
to hold the associated tuning weight in a predetermined position
relative to the arc-shaped groove portion.
In any of the embodiments herein, the biasing member includes a
spring device operable to hold first and second sets of tuning
weight bodies of the associated tuning weight in respective
predetermined positions at opposite ends of the arc-shaped groove
portion.
In any of the embodiments herein, the arc-shaped groove portion
defined by the cylindrical body member of the variable inertia
flywheel apparatus includes an arc-shaped passageway portion
defined by the cylindrical body member and extending
circumferentially relative to the longitudinal axis, and a fill
passageway portion defined by the cylindrical body member and
extending substantially in parallel with the longitudinal axis,
wherein in any of the embodiments herein the fill passageway
portion includes a source aperture on an outer end of the fill
passageway portion opening the fill passageway portion to the first
face of the cylindrical body member, and a supply aperture on an
inner end of the fill passageway portion and in communication with
the arc-shaped passageway portion of the arc-shaped groove portion.
The source aperture is adapted to, capable of, and/or configured to
receive the associated tuning weight into the cylindrical body
member. The supply aperture is adapted to, capable of, and/or
configured to communicate the associated tuning weight between the
fill passageway portion and the arc-shaped passageway portion of
the arc-shaped groove portion.
In any of the embodiments herein, the arc-shaped passageway portion
of the variable inertia flywheel apparatus includes a closed
arc-shaped passageway portion in communication with the fill
passageway portion and, in any of the embodiments herein, the
supply aperture of the variable inertia flywheel apparatus defines
a sole pathway of ingress and egress of the associated tuning
weight relative to the arc-shaped passageway portion.
In any of the embodiments herein, the variable inertia flywheel
apparatus further includes a biasing member disposed in the
arc-shaped passageway portion, wherein the biasing member is
operable to hold first and second sets of tuning weight bodies of
the associated tuning weight in predetermined positions at opposite
ends of the arc-shaped passageway portion.
In any of the embodiments herein, the arc-shaped groove portion
defined by the cylindrical body member of the variable inertia
flywheel apparatus includes a first arc-shaped passageway portion
defined by the cylindrical body member and extending
circumferentially relative to the longitudinal axis on a first side
of a plane bisecting the cylindrical body member and containing the
longitudinal axis. Further in any of the embodiments herein, the
arc-shaped groove portion defined by the cylindrical body member of
the variable inertia flywheel apparatus includes a second
arc-shaped passageway portion defined by the cylindrical body
member and extending circumferentially relative to the longitudinal
axis on a second side opposite from the first side of the plane
bisecting the cylindrical body member and containing the
longitudinal axis
In any of the embodiments herein, the first arc-shaped passageway
portion of the variable inertia flywheel apparatus is spaced from
the longitudinal axis by a first radius, and the second arc-shaped
passageway portion of the variable inertia flywheel apparatus is
spaced from the longitudinal axis by a second radius, wherein the
first and second radii are the same.
In any of the embodiments herein, the first arc-shaped passageway
portion of the variable inertia flywheel apparatus is spaced from
the longitudinal axis by a first radius, and the second arc-shaped
passageway portion of the variable inertia flywheel apparatus is
spaced from the longitudinal axis by a second radius, wherein the
first and second radii are the different.
In any of the embodiments herein, the variable inertia flywheel
apparatus further includes first and second biasing members,
wherein the first biasing member is disposed in the first
arc-shaped passageway portion, and the second biasing member is
disposed in the second arc-shaped passageway portion. In any of the
embodiments herein, the first biasing member is operable to hold
first and second sets of tuning weight bodies of the associated
tuning weight in respective predetermined positions at opposite
ends of the first arc-shaped passageway portion, and in any of the
embodiments herein, the second biasing member is operable to hold
third and fourth sets of tuning weight bodies of the associated
tuning weight in respective predetermined positions at opposite
ends of the second arc-shaped passageway portion.
In any of the embodiments herein, the arc-shaped groove portion
defined by the cylindrical body member of the variable inertia
flywheel apparatus includes first and second fill passageway
portions, wherein the first fill passageway portion extends
substantially in parallel with the longitudinal axis, and includes
a first source aperture on an outer end of the first fill
passageway portion opening the first fill passageway portion to the
first face of the cylindrical body member. In any of the
embodiments herein, the first source aperture is adapted to,
capable of, and/or configured to receive first and second sets of
tuning weight bodies of the associated tuning weight into the
cylindrical body member. In any of the embodiments herein, the
first fill passageway portion includes a first supply aperture on
an inner end of the first fill passageway portion and in
communication with the first arc-shaped passageway portion of the
arc-shaped groove portion, the first supply aperture being adapted
to, capable of, and/or configured to communicate the first and
second sets of tuning weight bodies of the associated tuning weight
between the first fill passageway portion and the first arc-shaped
passageway portion. The second fill passageway portion extends
substantially in parallel with the longitudinal axis and includes a
second source aperture on an outer end of the second fill
passageway portion opening the second fill passageway portion to
the first face of the cylindrical body member. The second source
aperture is adapted to, capable of, and/or configured to receive
third and fourth sets of tuning weight bodies of the associated
tuning weight into the cylindrical body member. The second fill
passageway portion includes a second supply aperture on an inner
end of the second fill passageway portion and in communication with
the second arc-shaped passageway portion of the arc-shaped groove
portion. The second supply aperture is adapted to, capable of,
and/or configured to communicate the third and fourth sets of
tuning weight bodies of the associated tuning weight between the
second fill passageway portion and the second arc-shaped passageway
portion.
In any of the embodiments herein, the arc-shaped groove portion
defined by the cylindrical body member of the variable inertia
flywheel apparatus includes first and second arc-shaped passageway
portions, wherein the first arc-shaped passageway portion defined
by the cylindrical body member extends circumferentially relative
to the longitudinal axis on a first side of a plane bisecting the
cylindrical body member and containing the longitudinal axis. The
first arc-shaped passageway portion is configured to receive first
and second sets of tuning weight bodies of the associated tuning
weight. The second arc-shaped passageway portion defined by the
cylindrical body member extends circumferentially relative to the
longitudinal axis on the first side of the plane bisecting the
cylindrical body member and containing the longitudinal axis,
wherein the second arc-shaped passageway portion is configured to
receive third and fourth sets of tuning weight bodies of the
associated tuning weight.
In any of the embodiments herein, the first arc-shaped passageway
portion of the variable inertia flywheel apparatus is spaced from
the longitudinal axis by a first radius, and the second arc-shaped
passageway portion of the variable inertia flywheel apparatus is
spaced from the longitudinal axis by a second radius different than
the first radius.
In any of the embodiments herein, the first arc-shaped passageway
portion of the variable inertia flywheel apparatus is spaced from
the longitudinal axis by a first radius, and the second arc-shaped
passageway portion of the variable inertia flywheel apparatus is
spaced from the longitudinal axis by a second radius the same as
the first radius.
In any of the embodiments herein, the variable inertia flywheel
apparatus further includes first and second biasing members,
wherein the first biasing member is disposed in the first
arc-shaped passageway portion and is operable to hold the first and
second sets of tuning weight bodies of the associated tuning weight
in predetermined positions at opposite ends of the first arc-shaped
passageway portion, and wherein the second biasing member is
disposed in the second arc-shaped passageway portion and is
operable to hold the third and fourth sets of tuning weight bodies
of the associated tuning weight in predetermined positions at
opposite ends of the second arc-shaped passageway portion.
In any of the embodiments herein, the arc-shaped groove portion
defined by the cylindrical body member of the variable inertia
flywheel apparatus includes third and fourth arc-shaped passageway
portions, wherein the third arc-shaped passageway portion extends
circumferentially relative to the longitudinal axis on a second
side opposite from the first side of the plane bisecting the
cylindrical body member and containing the longitudinal axis, and
is configured to receive a third tuning weight body of the
associated tuning weight. The fourth arc-shaped passageway portion
extends circumferentially relative to the longitudinal axis on the
second side of the plane bisecting the cylindrical body member and
containing the longitudinal axis, and is configured to receive a
fourth tuning weight body of the associated tuning weight.
In any of the embodiments herein, the first arc-shaped passageway
portion of the variable inertia flywheel apparatus is spaced from
the longitudinal axis by a first radius, the second arc-shaped
passageway portion of the variable inertia flywheel apparatus is
spaced from the longitudinal axis by a second radius less than the
first radius, the third arc-shaped passageway portion of the
variable inertia flywheel apparatus is spaced from the longitudinal
axis by a third radius, and the fourth arc-shaped passageway
portion of the variable inertia flywheel apparatus is spaced from
the longitudinal axis by a fourth radius less than the third
radius.
In any of the embodiments herein, the first and third radii of the
first arc-shaped passageway portion of the variable inertia
flywheel apparatus are the same, and the second and fourth radii of
the second arc-shaped passageway portion of the variable inertia
flywheel apparatus are the same.
In any of the embodiments herein, the second inertial property of
the cylindrical body member variable inertia flywheel apparatus
with the associated tuning weight received in the arc-shaped groove
portion remains unchanged and/or otherwise fixed for any position
of the associated tuning weight along the arc-shaped groove portion
of the cylindrical body member.
In any of the embodiments herein, the second inertial property of
the cylindrical body member variable inertia flywheel apparatus
with one or more associated tuning weight(s) received in any
selected one of the one or more arc-shaped groove portion(s)
remains unchanged and/or otherwise fixed for any position of the
associated one or more tuning weight(s) along the respective
arc-shaped groove portion of the selected one of the one or more
arc-shaped groove portions of the cylindrical body member.
In a further aspect, a variable inertia flywheel system is provided
including a flywheel apparatus having cylindrical body member, and
a tuning weight having a mass. The cylindrical body member defines
a longitudinal axis extending between spaced apart front and rear
faces of the cylindrical body member, and an arc-shaped groove
portion extending circumferentially relative to the longitudinal
axis. The arc-shaped groove portion is configured to selectively
receive one or more tuning weights wherein the one or more tuning
weights have a collective mass sufficient to vary an inertial
property of the cylindrical body member between a first inertial
property with the one or more of the plurality of tuning weights
selectively removed from the arc-shaped groove portion and a second
inertial property greater than the first inertial property with the
one or more of the plurality of tuning weights selectively received
in the arc-shaped groove portion.
In any of the embodiments herein, the variable inertia flywheel
system includes one or more tuning weight(s), each having a mass,
and a flywheel apparatus in accordance with any of the embodiments
described herein.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings which are incorporated in and
constitute a part of the specification, example embodiments of the
invention are illustrated, which, together with a general
description of the invention given above, and the detailed
description given below, serve to exemplify the example embodiments
of the claimed invention.
FIG. 1 is a schematic perspective illustration showing a variable
inertia flywheel system in accordance with an example
embodiment.
FIG. 2 is a cross-sectional view of the variable inertia flywheel
system of FIG. 1 in accordance with an example embodiment taken
along line 2-2 of FIG. 1.
FIG. 3 is a cross-sectional view of the variable inertia flywheel
system of FIG. 1 in accordance with an example embodiment taken
along line 3-3 of FIG. 1.
FIG. 4 is a cross-sectional view of the variable inertia flywheel
system of FIG. 1 in accordance with an example embodiment taken
along line 4-4 of FIG. 2.
DETAILED DESCRIPTION
The following describes one or more example embodiments of the
disclosed variable inertia flywheel apparatus for work vehicles,
and of the disclosed variable inertia flywheel system including the
disclosed variable inertia flywheel apparatus in combination with
one or more tuning weight members, as shown in the accompanying
figures of the drawings described briefly above. Various
modifications to the example embodiments may be contemplated by one
of skill in the art.
FIG. 1 shows a variable inertia flywheel system 1 in accordance
with an example embodiment including one or more associated tuning
weights (not shown in FIG. 1), and a variable inertia flywheel
apparatus 10 in accordance with an example embodiment. As shown
there, the flywheel apparatus 10 includes a cylindrical body member
20 defining a longitudinal axis L extending between spaced apart
front and rear faces 22, 24 of the cylindrical body member 20. The
variable inertia flywheel apparatus 10 includes a first coupling
interface 2 provided on the front face 22 of the cylindrical body
member 20, and a second coupling interface 3 (FIGS. 2, 3) provided
on the rear face 24 of the cylindrical body member 20. The first
coupling interface 2 enables the flywheel apparatus 10 of the
variable inertia flywheel system 1 to be attached with an
associated drivetrain mechanism such as for example a crankshaft of
an engine (not shown) of a work vehicle, and the second coupling
interface 3 enables the flywheel apparatus 10 of the variable
inertia flywheel system 1 to be attached with a further associated
drivetrain mechanism such as for example a clutch or torque
converter of a transmission (not shown) of the work vehicle. In
addition, an integrated circular ring gear 4 is provided on an
outer extent of the cylindrical body member 20 for engaging a
control mechanism of an associated work vehicle such as for example
a starter motor (not shown).
The novel variable inertia flywheel apparatus 10 of the variable
inertia flywheel system 1 in accordance with an example embodiment
includes a cylindrical body member 20 that defines at least one
arc-shaped groove portion extending circumferentially relative to
the longitudinal axis L, wherein the at least one arc-shaped groove
portion is adapted to selectively receive an associated tuning
weight 40 (FIGS. 2-4) having a mass whereby an inertial property of
the cylindrical body member 20 is selectively varied from a first
inertial characteristic before the associated tuning weight is
selectively added to the arc-shaped groove portion to a second
inertial characteristic greater than the first inertial
characteristic when the associated tuning weight is selectively
received in the arc-shaped groove portion. Similarly, removal of
the associated tuning weight from the arc-shaped groove portion
varies the inertial property of the cylindrical body member from
the second inertial characteristic greater to the first inertial
characteristic when the associated tuning weight is selectively
removed from the arc-shaped groove portion. In any of the
embodiments herein, the second inertial property of the cylindrical
body member variable inertia flywheel apparatus with one or more
associated tuning weight(s) received in any selected one of the at
least one arc-shaped groove portion(s) remains unchanged and/or
otherwise fixed for any position of the associated one or more
tuning weight(s) along the respective arc-shaped groove portion of
the selected one of the at least one arc-shaped groove portions of
the cylindrical body member.
In a further embodiment the at least one arc-shaped groove portion
includes a plurality of arc-shaped groove portions each extending
circumferentially relative to the longitudinal axis L, wherein each
of the plurality of arc-shaped groove portions is adapted to
selectively receive at least one associated tuning weight having a
mass whereby the inertial property of the cylindrical body member
20 is selectively varied from a first inertial characteristic
before the one or more associated tuning weights are selectively
added to a selected arc-shaped groove portion of the plurality of
arc-shaped groove portions to a second inertial characteristic
greater than the first inertial characteristic when the one or more
associated tuning weights are selectively received in the selected
arc-shaped groove portion.
In the example embodiments herein, the arc-shaped groove portion
defined by the cylindrical body member is adapted to, capable of,
and/or otherwise configured to selectively receive one or more
associated tuning weight(s), each having a mass sufficient to vary
an inertial property of the cylindrical body member between first
and second inertial properties. That is, the arc-shaped groove
portion defined by the cylindrical body member is designed or
constructed to receive and hold the one or more associated tuning
weight(s) on, in or within the arc-shaped groove portion 30 (FIGS.
2-4).
In the example embodiments herein, the inertial property of the
cylindrical body member 20 with the one or more associated tuning
weights received in an arc-shaped groove portion remains unchanged
and/or otherwise fixed or constant or equivalent for any position
of the one or more associated tuning weights 40 along the
arc-shaped groove portion 30 of the cylindrical body member 20.
The variable inertia flywheel system 1 of the example embodiment
includes a set of cover or closure devices such as for example
plugs 5 provided in the example embodiment for selective connection
with the variable inertia flywheel apparatus 10 for covering fill
passageways configured to receive the one or more of the tuning
weights into the cylindrical body member 20 to thereby selectively
vary the inertia of the flywheel apparatus 10 between an initial or
first inertial characteristic and a selected or second inertial
characteristic as may be necessary and/or desired by adding or
removing one or more of the tuning weights onto the cylindrical
body member 20. The set of plugs 5 may include a pair of outer
plugs 6, 7, and a similar pair of inner plugs 8, 9. The pairs of
outer and inner plugs 6, 7 and 8, 9 are configured to receive one
or more of the tuning weights 40 into the cylindrical body member
20.
FIG. 2 is a cross sectional view of the variable inertia flywheel
system 1 of FIG. 1 in accordance with an example embodiment taken
along line 2-2 of FIG. 1 and, similarly, FIG. 3 is a cross
sectional view of the variable inertia flywheel system 1 of FIG. 1
taken along line 3-3 of FIG. 1. In addition, FIG. 4 is a cross
sectional view of the variable inertia flywheel system 1 of FIG. 1
taken along line 4-4 in FIG. 2. It is to be appreciated that in one
embodiment a variable inertia flywheel apparatus 10 is provided
comprising a cylindrical body member 20 defining a longitudinal
axis L extending between spaced apart front 22 and rear 24 faces of
the cylindrical body member 20, and an arc-shaped groove portion 30
extending circumferentially relative to the longitudinal axis L,
wherein the arc-shaped groove portion 30 defined by the cylindrical
body member 20 is adapted to, capable of, and/or otherwise
configured to selectively receive an associated tuning weight 40 by
the cylindrical body member being designed or constructed to
receive and hold on, in, or within the arc-shaped groove portion 30
the one or more associated tuning weight(s) having a mass
sufficient to vary an inertial property of the cylindrical body
member 20 between a first inertial property with the associated
tuning weight 40 selectively removed from the arc-shaped groove
portion 30, and a second inertial property greater than the first
inertial property with the associated tuning weight 40 selectively
received in the arc-shaped groove portion 30. It is also to be
appreciated that in accordance with a further embodiment, a
variable inertia flywheel system 1 is provided comprising one or
more tuning weights 40 in combination with a variable inertia
flywheel apparatus 10 of the various example embodiments described
herein.
The cross-sectional views of the variable inertia flywheel system 1
in accordance with the example embodiments shown in FIGS. 2-4 show
the associated tuning weight 40 in the form of one or more
spherical objects that are loosely received in the one or more
arc-shaped groove portions for ease of illustration and
description. It is to be understood that in practice, the spherical
objects that are preferably tightly received in the one or more
arc-shaped groove portions so that they do not move, rattle, or
otherwise dislocate from their intended position(s) within the
groove portions during use of the flywheel system 1. The spherical
objects may be cooled to very low temperature such as my immersing
them in liquid nitrogen for example so that they may reduce in size
by shrinking before insertion into the groove portions, then
allowed to expand in situ after they are properly located to their
respective desired position(s) within the groove portions.
With reference to drawing FIGS. 1-4, the variable inertia flywheel
apparatus 10 of the example embodiment comprises a cylindrical body
member 20 defining a longitudinal axis L extending between spaced
apart front and rear faces 22, 24 of the cylindrical body member
20, and an arc-shaped groove portion 30 extending circumferentially
relative to the longitudinal axis L. In an example embodiment, the
arc-shaped groove portion 30 defined by the cylindrical body member
20 is a partial circular arc centered about the longitudinal axis
L. In an example embodiment, the arc-shaped groove portion 30 may
define a partial toroidal space within the cylindrical body member
20 and having an axis of rotation centered about the longitudinal
axis L. In a further example embodiment, the arc-shaped groove
portion 30 defined by the cylindrical body member 20 is a complete
uninterrupted circular arc centered about the longitudinal axis L.
In a stull further example embodiment, the arc-shaped groove
portion 30 may define a toroidal space within the cylindrical body
member 20 and having an axis of complete or otherwise full rotation
centered about the longitudinal axis L.
As will be described in greater detail below, the associated tuning
weight 40 may include one or more tuning weight bodies and/or one
or more sets of tuning weight bodies, wherein each of the sets of
tuning weight bodies may include one or more tuning weight bodies.
In accordance with the example embodiment, the tuning weight bodies
are a plurality of metal balls such as for example a plurality of
metal ball bearings, collectively referred to herein from time to
time as an associated tuning weight 40. The use of a plurality of
metal ball bearings as the plurality of metal balls collectively
providing the associated tuning weight 40 in accordance with the
example embodiment is beneficial for many reasons including because
metal ball bearings are readily available in many sizes, and also
because they are relatively inexpensive. In addition, metal ball
bearings are essentially insensitive to heat, and their physical
properties including importantly their inertial mass properties do
not degrade or otherwise change over time or during use even in
challenging environments and applications. In the example
embodiment all of the tuning weight bodies are metal balls.
However, it is to be appreciated that some of the metal ball
bearings may be substituted with tuning weights formed from other
materials and also in shapes other than spherical as may be
necessary to achieve a desired inertial characteristic result of
the flywheel body member. As an example some of the tuning weight
bodies may be metal balls and others of the tuning weight bodies
may be hard plastic balls or balls formed of other materials having
the necessary temperature and other environmental properties and
also having a reduced mass characteristic relative to the metal
balls. In this way the tuning weight bodies having the lower mass
characteristic may be intermixed with metal ball bearings having a
higher mass characteristic so that a range of desired inertial
characteristic results of the flywheel body member may be obtained.
In other example embodiments, some of the tuning weight bodies may
be formed of a first type of metal having a first density and
others of the tuning weight bodies may be formed of a second type
of metal having a second density different than the first density
so that the differently formed metal balls may be intermixed as
necessary of desired to result in a range of desired inertial
characteristic results of the flywheel body member may be obtained.
In still further example embodiments, all of the tuning weight
bodies may be formed of a material having the same density, but
some of the tuning weight bodies may have different sizes relative
to others of the tuning weight bodies. Any combination of size
and/or density of the tuning weight bodies may be used in
accordance with the example embodiment for effecting a flywheel
system or assembly including a flywheel body and one or more add-on
inertial masses that may be selectively secured to the flywheel
body for adjusting the inertial characteristics of a flywheel as
may be necessary and/or desired by adding or removing one or more
of the add-on inertial masses.
In addition to the above, the variable inertia flywheel apparatus
10 in accordance with the example embodiment further includes a
biasing member 50 disposed in the arc-shaped groove portion 30 as
shown best in FIG. 4. In the example, the biasing member 50 is a
resilient device operable to store energy by being compressed and
to then use the stored energy to hold the associated tuning weight
40 in a predetermined position relative to the arc-shaped groove
portion 30. In particular and in an example, the biasing member 50
of the example shown includes a spring device 52 operable to hold
first and second sets 142, 144 of tuning weight bodies of the
associated tuning weight 40 in respective predetermined positions
relative to the arc-shaped groove portion 30. In the example
embodiment the biasing member 50 of the example shown including the
spring device 52 is operable to hold first and second sets 142, 144
of tuning weight bodies of the associated tuning weight 40 in
respective predetermined positions at opposite ends of the
arc-shaped groove portion 30. It is to be appreciated however that
other devices such as resilient compressible members, small screw
jacks or the like may be used as well to hold the associated tuning
weight 40 in a predetermined position relative to the arc-shaped
groove portion 30.
In the example embodiment illustrated, the arc-shaped groove
portion 30 defined by the cylindrical body member 20 of the
variable inertia flywheel apparatus 10 includes an arc-shaped
passageway portion 132 (FIGS. 2-4) and a fill passageway portion
134 (FIG. 3). The arc-shaped and fill passageway portions 132, 134
are defined by the cylindrical body member 20, wherein and as
shown, the arc-shaped passageway portion 132 extends
circumferentially relative to the longitudinal axis L, and the fill
passageway portion 134 extends substantially in parallel with the
longitudinal axis L. In the example embodiment the arc-shaped
passageway portion 132 extends circumferentially along a circle
having a first radius R1 relative to the longitudinal axis L.
Further in the example embodiment and as best shown in FIG. 3, the
fill passageway portion 134 comprises a source aperture 136 on an
outer end 137 of the fill passageway portion 134 opening the fill
passageway portion 134 to the first face 22 of the cylindrical body
member 20, and a supply aperture 138 on an inner end 139 of the
fill passageway portion 134 and in communication with the
arc-shaped passageway portion 132 of the arc-shaped groove portion
30. The source aperture 136 is configured to receive the associated
tuning weight 40 into the cylindrical body member 20, and the
supply aperture 138 is configured to communicate the associated
tuning weight 40 between the fill passageway portion 134 and the
arc-shaped passageway portion 132 of the arc-shaped groove portion
30. In an example embodiment, the source aperture 136 is configured
to receive the first and second sets 142, 144 of tuning weight
bodies of the associated tuning weight 40 into the cylindrical body
member 20, and the supply aperture 138 is configured to communicate
the first and second sets 142, 144 of tuning weight bodies of the
associated tuning weight 40 between the fill passageway portion 134
and the arc-shaped passageway portion 132 of the arc-shaped groove
portion 30.
Also in the example embodiment illustrated, the arc-shaped groove
portion 30 defined by the cylindrical body member 20 of the
variable inertia flywheel apparatus 10 includes a second arc-shaped
passageway portion 232 (FIGS. 2-4) and a second fill passageway
portion 234 (FIG. 3). The second arc-shaped and fill passageway
portions 232, 234 are defined by the cylindrical body member 20,
wherein and as shown, the second arc-shaped passageway portion 232
extends circumferentially along a circle having a first radius R2
relative to the longitudinal axis L, and the second fill passageway
portion 234 extends substantially in parallel with the longitudinal
axis L. In the example embodiment the second arc-shaped passageway
portion 232 extends circumferentially along a circle having a
second radius R2 relative to the longitudinal axis L. As
illustrated, the second radius R2 of the second arc-shaped
passageway portion 232 is the same as the first radius R1 of the
first arc-shaped passageway portion 132 but it is to be appreciated
that the radii R1 and R2 can be different as may be desired. In
addition, for embodiments wherein the radii R1 and R2 are the same,
the first and second arc-shaped passageway portions 132, 232 may be
continuous or equivalently formed as a single arc-shaped passageway
portion extending a full 360.degree. circle of revolution about the
longitudinal axis L of the cylindrical body member 20. In still
further addition, for embodiments wherein the first and second
radii R1 and R2 are not the same, the first and second arc-shaped
passageway portions 132, 232 may be discontinuous or equivalently
formed as single separate arc-shaped passageway portions extending
up to a full 360.degree. circle of revolution about the
longitudinal axis L of the cylindrical body member 20, but spaced
apart from the longitudinal axis L by the difference between their
respective first and second radii R1 and R2. Further in the example
embodiment and as best shown in FIG. 3, the second fill passageway
portion 234 comprises a second source aperture 236 on an outer end
237 of the fill passageway portion 234 opening the fill passageway
portion 234 to the first face 22 of the cylindrical body member 20,
and a second supply aperture 238 on an inner end 239 of the fill
passageway portion 234 and in communication with the arc-shaped
passageway portion 232 of the arc-shaped groove portion 30. The
second source aperture 236 is configured to receive the associated
tuning weight 40 into the cylindrical body member 20, and the
second supply aperture 238 is configured to communicate the
associated tuning weight 40 between the fill passageway portion 234
and the arc-shaped passageway portion 232 of the arc-shaped groove
portion 30. In an example embodiment, the source aperture 236 is
configured to receive third and fourth sets 242, 244 of tuning
weight bodies of the associated tuning weight 40 into the
cylindrical body member 20, and the supply aperture 238 is
configured to communicate the third and fourth sets 242, 244 of
tuning weight bodies of the associated tuning weight 40 between the
fill passageway portion 234 and the arc-shaped passageway portion
232 of the arc-shaped groove portion 30.
Also the example embodiment illustrated, the arc-shaped groove
portion 30 defined by the cylindrical body member 20 of the
variable inertia flywheel apparatus 10 includes a third arc-shaped
passageway portion 332 (FIGS. 2-4) and a third fill passageway
portion 334 (FIG. 3). The third arc-shaped and fill passageway
portions 332, 334 are defined by the cylindrical body member 20,
wherein and as shown, the arc-shaped passageway portion 332 extends
circumferentially relative to the longitudinal axis L, and the fill
passageway portion 334 extends substantially in parallel with the
longitudinal axis L. In the example embodiment the third arc-shaped
passageway portion 332 extends circumferentially along a circle
having a third radius R3 relative to the longitudinal axis L. As
illustrated, the third radius R3 is smaller than the first and
second radii R1, R2, but it is to be appreciated that the radius R3
can be larger than one or both of the radii R1, R2 as may be
desired.
Further in the example embodiment and as best shown in FIG. 3, the
fill passageway portion 334 comprises a source aperture 336 on an
outer end 337 of the fill passageway portion 334 opening the fill
passageway portion 334 to the first face 22 of the cylindrical body
member 20, and a supply aperture 338 on an inner end 339 of the
fill passageway portion 334 and in communication with the
arc-shaped passageway portion 332 of the arc-shaped groove portion
30. The source aperture 336 is configured to receive the associated
tuning weight 40 into the cylindrical body member 20, and the
supply aperture 338 is configured to communicate the associated
tuning weight 40 between the fill passageway portion 334 and the
arc-shaped passageway portion 332 of the arc-shaped groove portion
30. In an example embodiment, the source aperture 336 is configured
to receive the fifth and sixth sets 342, 344 of tuning weight
bodies of the associated tuning weight 40 into the cylindrical body
member 20, and the supply aperture 338 is configured to communicate
the fifth and sixth sets 342, 344 of tuning weight bodies of the
associated tuning weight 40 between the fill passageway portion 334
and the arc-shaped passageway portion 332 of the arc-shaped groove
portion 30.
Also in the example embodiment illustrated, the arc-shaped groove
portion 30 defined by the cylindrical body member 20 of the
variable inertia flywheel apparatus 10 includes a fourth arc-shaped
passageway portion 432 (FIGS. 2-4) and a fourth fill passageway
portion 434 (FIG. 3). The fourth arc-shaped and fill passageway
portions 432, 434 are defined by the cylindrical body member 20,
wherein and as shown, the arc-shaped passageway portion 432 extends
circumferentially relative to the longitudinal axis L, and the fill
passageway portion 434 extends substantially in parallel with the
longitudinal axis L. In the example embodiment the fourth
arc-shaped passageway portion 432 extends circumferentially along a
circle having a fourth radius R4 relative to the longitudinal axis
L. As illustrated, the fourth radius R4 of the arc-shaped
passageway portion 432 is the same as the third radius R3 of the
arc-shaped passageway portion 332 but it is to be appreciated that
the radii R3 and R4 can be different as may be desired. In
addition, for embodiments wherein the radii R3 and R4 are the same,
the arc-shaped passageway portions 332, 432 may be continuous or
equivalently formed as a single arc-shaped passageway portion
extending a full 360.degree. circle of revolution about the
longitudinal axis L of the cylindrical body member 20. In still
further addition, for embodiments wherein the radii R3 and R4 are
not the same, the third and fourth arc-shaped passageway portions
332, 432 may be discontinuous or equivalently formed as single
separate arc-shaped passageway portions extending up to a full
360.degree. circle of revolution about the longitudinal axis L of
the cylindrical body member 20, but spaced apart from the
longitudinal axis L by the difference between their respective
third and fourth radii R3 and R4. Further in the example embodiment
and as best shown in FIG. 3, the fill passageway portion 434
comprises a source aperture 436 on an outer end 437 of the fill
passageway portion 434 opening the fill passageway portion 434 to
the first face 22 of the cylindrical body member 20, and a supply
aperture 438 on an inner end 439 of the fill passageway portion 434
and in communication with the arc-shaped passageway portion 432 of
the arc-shaped groove portion 30. The source aperture 436 is
configured to receive the associated tuning weight 40 into the
cylindrical body member 20, and the supply aperture 438 is
configured to communicate the associated tuning weight 40 between
the fill passageway portion 434 and the arc-shaped passageway
portion 432 of the arc-shaped groove portion 30. In an example
embodiment, the source aperture 436 is configured to receive
seventh and eighth sets 442, 444 of tuning weight bodies of the
associated tuning weight 40 into the cylindrical body member 20,
and the supply aperture 438 is configured to communicate the
seventh and eighth sets 442, 444 of tuning weight bodies of the
associated tuning weight 40 between the fill passageway portion 434
and the arc-shaped passageway portion 432 of the arc-shaped groove
portion 30.
Further in accordance with the example embodiment illustrated, the
arc-shaped passageway portion 132 of the variable inertia flywheel
apparatus 10 defines a closed arc-shaped passageway portion 133 in
communication with the fill passageway portion 134. Also, the
supply aperture 138 of the variable inertia flywheel apparatus 10
defines a sole pathway of ingress and egress of the associated
tuning weight 40 relative to the arc-shaped passageway portion 32.
In an example embodiment, the supply aperture 138 of the variable
inertia flywheel apparatus 10 defines a sole pathway of ingress and
egress of the first and second sets 142, 144 of tuning weight
bodies of the associated tuning weight 40 relative to the
arc-shaped passageway portion 32.
Similarly and further in accordance with the example embodiment
illustrated, the arc-shaped passageway portion 232 of the variable
inertia flywheel apparatus 10 defines a closed arc-shaped
passageway portion 233 in communication with the fill passageway
portion 234. Also, the supply aperture 238 of the variable inertia
flywheel apparatus 10 defines a sole pathway of ingress and egress
of the associated tuning weight 40 relative to the arc-shaped
passageway portion 232. In an example embodiment, the supply
aperture 238 of the variable inertia flywheel apparatus 10 defines
a sole pathway of ingress and egress of the tuning weight bodies of
the associated tuning weight 40 relative to the arc-shaped
passageway portion 232.
Similarly and further in accordance with the example embodiment
illustrated, the arc-shaped passageway portion 332 of the variable
inertia flywheel apparatus 10 defines a closed arc-shaped
passageway portion 333 in communication with the fill passageway
portion 334. Also, the supply aperture 338 of the variable inertia
flywheel apparatus 10 defines a sole pathway of ingress and egress
of the associated tuning weight 40 relative to the arc-shaped
passageway portion 332. In an example embodiment, the supply
aperture 338 of the variable inertia flywheel apparatus 10 defines
a sole pathway of ingress and egress of the tuning weight bodies of
the associated tuning weight 40 relative to the arc-shaped
passageway portion 332.
Similarly and further in accordance with the example embodiment
illustrated, the arc-shaped passageway portion 432 of the variable
inertia flywheel apparatus 10 defines a closed arc-shaped
passageway portion 433 in communication with the fill passageway
portion 434. Also, the supply aperture 438 of the variable inertia
flywheel apparatus 10 defines a sole pathway of ingress and egress
of the associated tuning weight 40 relative to the arc-shaped
passageway portion 432. In an example embodiment, the supply
aperture 438 of the variable inertia flywheel apparatus 10 defines
a sole pathway of ingress and egress of the tuning weight bodies of
the associated tuning weight 40 relative to the arc-shaped
passageway portion 432.
As shown and as described above, the biasing member 50 of the
variable inertia flywheel apparatus 10 is disposed in the
arc-shaped passageway portion 32. It is to be appreciated that
during use of the variable inertia flywheel apparatus 10 of the
example embodiment, a biasing member is provided in the form of a
resilient device operable to store energy by being compressed and
to then use the stored energy to hold the associated tuning weights
in their respective predetermined positions relative to the
arc-shaped groove portions. In particular and in an example, the
biasing member 50 of the example shown includes a spring device
operable to hold first and second sets 142, 144 of tuning weight
bodies of the associated tuning weight 40 in predetermined
positions at opposite ends of the arc-shaped passageway portion 32.
As shown, each of the first and second sets 142, 144 of tuning
weight bodies of the associated tuning weight 40 includes seven (7)
separate metal balls which and as described above may be metal ball
bearings for example. It is to be appreciated, however, that any
number of metal balls or the like may be used as necessary and/or
desired, and it is further to be appreciated that some of the metal
ball bearings may be substituted with tuning weights formed from
other materials as may be necessary to achieve a desired inertial
characteristic result of the flywheel body member. As an example
some of the tuning weight bodies may be metal balls and others of
the tuning weight bodies may be hard plastic balls or balls formed
of other materials having the necessary temperature and other
environmental properties and also having a reduced mass
characteristic relative to the metal balls. In this way the tuning
weight bodies having the lower mass characteristic may be
intermixed with metal ball bearings so that a range of desired
inertial characteristic results of the flywheel body member may be
obtained. In other example embodiments, some of the tuning weight
bodies may be formed of a first type of metal having a first
density and others of the tuning weight bodies may be formed of a
second type of metal having a second density different than the
first density. In still further example embodiments, all of the
tuning weight bodies may be formed of a material having the same
density, but some of the tuning weight bodies may have different
sizes relative to others of the tuning weight bodies.
As described above, the arc-shaped groove portion 30 defined by the
cylindrical body member 20 of the variable inertia flywheel
apparatus 10 comprises an arc-shaped passageway portion 132 defined
by the cylindrical body member 20. In accordance with an example
embodiment, the arc-shaped passageway portion 132 defined by the
cylindrical body member 20 extends circumferentially relative to
the longitudinal axis L on a first side A of a plane P bisecting
the cylindrical body member 20 and containing the longitudinal axis
L. The plane P extends out of the page in the views presented in
FIGS. 2 and 3, and it extends obliquely within the page in the view
presented in FIG. 4. The plane P bisects the cylindrical body
member 20 along the line PP and the plane P contains the
longitudinal axis L, wherein the line PP is perpendicular to the
longitudinal axis L. In addition, the cylindrical body member 20 of
the variable inertia flywheel apparatus 10 further defines a second
arc-shaped passageway portion 232 substantially as shown. The
second arc-shaped passageway portion 232 extends circumferentially
relative to the longitudinal axis L on a second side B opposite
from the first side A of the plane P bisecting the cylindrical body
member 20 and containing the longitudinal axis L.
In accordance with an embodiment, the first arc-shaped passageway
portion 132 lies entirely on the first side A of the plane P
bisecting the cylindrical body member 20 and containing the
longitudinal axis L
In accordance with an embodiment, the second arc-shaped passageway
portion 232 lies entirely on the second side B opposite from the
first side A of the plane P bisecting the cylindrical body member
20 and containing the longitudinal axis L
In accordance with an embodiment, the first arc-shaped passageway
portion 132 lies entirely on the first side A of the plane P and
the second arc-shaped passageway portion 232 lies entirely on the
second side B opposite from the first side A of the plane P.
In accordance with an embodiment, none of the first arc-shaped
passageway portion 132 lies on the second side B opposite from the
first side A of the plane P bisecting the cylindrical body member
20 and containing the longitudinal axis L.
In accordance with an embodiment, none of the second arc-shaped
passageway portion 232 lies on the first side A opposite from the
second side B of the plane P bisecting the cylindrical body member
20 and containing the longitudinal axis L.
In accordance with an embodiment, none of the first arc-shaped
passageway portion 132 lies on the second side B of the plane P and
none of the second arc-shaped passageway portion 232 lies on the
first side A of the plane P.
It is to be appreciated that although in accordance with an
embodiment the first arc-shaped passageway portion 132 lies
entirely on the first side A of the plane P bisecting the
cylindrical body member 20 and containing the longitudinal axis L,
in a further embodiment some of the first arc-shaped passageway
portion 132 may extend into the second side B opposite from the
first side A of the plane P bisecting the cylindrical body member
20 and, further, that one or both of the ends of the first
arc-shaped passageway portion 132 may extend into the second side B
opposite from the first side A of the plane P bisecting the
cylindrical body member 20.
It is also to be appreciated that although in accordance with an
embodiment the second arc-shaped passageway portion 232 lies
entirely on the second side B of the plane P bisecting the
cylindrical body member 20 and containing the longitudinal axis L,
in a further embodiment some of the second arc-shaped passageway
portion 232 may extend into the first side A opposite from the
second side B of the plane P bisecting the cylindrical body member
20 and, further, that one or both of the ends of the second
arc-shaped passageway portion 232 may extend into the first side A
opposite from the second side B of the plane P bisecting the
cylindrical body member 20.
In addition to the above and in accordance with an example
embodiment as shown in the drawing Figures such as in particular
FIGS. 2 and 3 for example, the first arc-shaped passageway portion
132 is spaced from the longitudinal axis L by a first radius R1,
and the second arc-shaped passageway portion 232 is spaced from the
longitudinal axis L by a second radius R2. In accordance with the
example embodiment, the first and second radii R1, R2 are the same.
However, it is to be appreciated that the first and second radii
R1, R2 may be different. In accordance with the example embodiment
shown, the first and second arc-shaped passageway portions 132, 232
are arranged symmetrically relative to the plane P. In accordance
with the example embodiment shown, each of the first and second
arc-shaped passageway portions 132, 232 receive the first and
second 142, 144 and third and fourth 242, 244 sets, respectively,
of tuning weight bodies of the associated tuning weight 40 having
the same size into the cylindrical body member 20.
In addition to the above and in accordance with an example
embodiment as shown in the drawing Figures such as in particular
FIGS. 2 and 3 for example, the third arc-shaped passageway portion
332 is spaced from the longitudinal axis L by a third radius R3,
and the fourth arc-shaped passageway portion 432 is spaced from the
longitudinal axis L by a fourth radius R4. In accordance with the
example embodiment, the third and fourth radii R3, R4 are the same.
However, it is to be appreciated that the third and fourth radii
R3, R4 may be different. In accordance with the example embodiment
shown, the third and fourth arc-shaped passageway portions 332, 432
are arranged symmetrically relative to the plane P. In accordance
with the example embodiment shown, each of the third and fourth
arc-shaped passageway portions 332, 432 receive the fifth and sixth
342, 344 and seventh and eighth 442, 444 sets, respectively, of
tuning weight bodies of the associated tuning weight 40 having the
same size into the cylindrical body member 20.
In addition to the above and in accordance with an example
embodiment as shown in the drawing Figures such as in particular
FIGS. 2 and 3 for example, the first arc-shaped passageway portion
132 is spaced from the longitudinal axis L by a first radius R1,
and the third arc-shaped passageway portion 332 is spaced from the
longitudinal axis L by a third radius R3. In accordance with the
example embodiment, the first and third radii R1, R3 are different.
However, it is to be appreciated that the first and third radii R1,
R3 may be the same wherein each of the first and third arc-shaped
passageway portions 132, 332 would share a portion of the
revolution about the longitudinal axis L and spaced from the
longitudinal axis by the same radius. In accordance with the
example embodiment shown, the first and third arc-shaped passageway
portions 132, 332 are arranged to extend into the first side A of
the plane P. In accordance with the example embodiment shown, each
of the first and third arc-shaped passageway portions 132, 332
receive the first and second 142, 144 and fifth and sixth 342, 344
sets, respectively, of tuning weight bodies of the associated
tuning weight 40 having the same size into the cylindrical body
member 20.
In addition to the above and in accordance with an example
embodiment as shown in the drawing Figures such as in particular
FIGS. 2 and 3 for example, the second arc-shaped passageway portion
232 is spaced from the longitudinal axis L by a second radius R2,
and the fourth arc-shaped passageway portion 432 is spaced from the
longitudinal axis L by a fourth radius R4. In accordance with the
example embodiment, the second and fourth radii R2, R4 are
different. However, it is to be appreciated that the second and
fourth radii R2, R4 may be the same wherein each of the second and
fourth arc-shaped passageway portions 232, 432 would share a
portion of the revolution about the longitudinal axis L and spaced
from the longitudinal axis by the same radius.
In addition to the above and in accordance with an example
embodiment as shown in the drawing Figures such as in particular
FIGS. 2 and 3 for example, the second arc-shaped passageway portion
232 is spaced from the longitudinal axis L by a second radius R2,
and the third arc-shaped passageway portion 332 is spaced from the
longitudinal axis L by a third radius R3. In accordance with the
example embodiment, the second and third radii R2, R3 are different
same. However, it is to be appreciated that the second and third
radii R2, R3 may be the same. In accordance with the example
embodiment shown, the second and third arc-shaped passageway
portions 232, 332 are arranged on opposite sides A, B of the plane
P. In accordance with the example embodiment shown, each of the
second and third arc-shaped passageway portions 232, 332 receive
the third and fourth 242, 244 and fifth and sixth 342, 344 sets,
respectively, of tuning weight bodies of the associated tuning
weight 40 having the same size into the cylindrical body member
20.
As shown and as described above, biasing members of the variable
inertia flywheel apparatus 10 are disposed in the arc-shaped
passageway portions. It is to be appreciated that during use of the
variable inertia flywheel apparatus 10 of the example embodiment,
the biasing members are operable to hold sets of tuning weight
bodies 40 in predetermined positions at opposite ends of the
arc-shaped passageway portions. As shown in the drawing Figures and
in particular as shown in FIG. 4, a first biasing member 150 of the
variable inertia flywheel apparatus 10 according to the example
embodiment is disposed in the first arc-shaped passageway portion
132 and a second biasing member 250 is disposed in the second
arc-shaped passageway portion 232. The first biasing member 150 is
operable to hold the first and second sets 142, 144 of tuning
weight bodies of the associated tuning weight 40 in respective
predetermined positions at opposite ends of the first arc-shaped
passageway portion 132. Similarly, the second biasing member 250 is
operable to hold third and fourth sets 242, 244 of tuning weight
bodies of the associated tuning weight 40 in respective
predetermined positions at opposite ends of the second arc-shaped
passageway portion 232.
As briefly described above, in the example embodiment illustrated,
the arc-shaped groove portion 30 defined by the cylindrical body
member 20 of the variable inertia flywheel apparatus 10 includes
arc-shaped passageway portions 132, 232 (FIGS. 2-4) and fill
passageway portions 134, 234 (FIG. 3). The first fill passageway
portion 134 defined by the cylindrical body member 20 extends
substantially in parallel with the longitudinal axis L, and
comprises first and second apertures 136, 138. A first source
aperture 136 is provided on an outer end 137 of the first fill
passageway portion 134 opening the first fill passageway portion
134 to the first face 22 of the cylindrical body member 20, and a
first supply aperture 138 is provided on an inner end 139 of the
first fill passageway portion 134 and is in communication with the
first arc-shaped passageway portion 132 of the arc-shaped groove
portion 30. The first source aperture 136 is configured to receive
first and second sets 142, 144 of tuning weight bodies of the
associated tuning weight 40 into the cylindrical body member 20,
and first supply aperture 138 is configured to communicate the
first and second sets 142, 144 of tuning weight bodies of the
associated tuning weight 40 between the first fill passageway
portion 134 and the first arc-shaped passageway portion 132.
Similarly, the second fill passageway portion 234 defined by the
cylindrical body member 20 extends substantially in parallel with
the longitudinal axis L, and comprises apertures 236, 238. In this
regard, a second source aperture 236 is provided on an outer end
237 of the second fill passageway portion 234 opening the second
fill passageway portion 234 to the first face 22 of the cylindrical
body member 20, wherein the second source aperture 236 is
configured to receive third and fourth sets 242, 244 of tuning
weight bodies of the associated tuning weight 40 into the
cylindrical body member 20. Also similarly, a second supply
aperture 238 is provided on an inner end 239 of the second fill
passageway portion 234 and is in communication with the second
arc-shaped passageway portion 232 of the arc-shaped groove portion
30. The second supply aperture 238 is configured to communicate the
third and fourth sets 242, 244 of tuning weight bodies of the
associated tuning weight 40 between the second fill passageway
portion 234 and the second arc-shaped passageway portion 232.
As described above, the cylindrical body member 20 of the variable
inertia flywheel apparatus 10 according to the example embodiment
defines one or more arc-shaped groove portions 30. In the example
shown, four (4) arc-shaped groove portions 132, 232, 332, 432 are
provided. In this regard, the first arc-shaped passageway portion
132 defined by the cylindrical body member 20 extends
circumferentially relative to the longitudinal axis L on a first
side A of a plane P bisecting the cylindrical body member 20 and
containing the longitudinal axis L. The first arc-shaped passageway
portion 132 is configured to receive a first tuning weight body 140
of the associated tuning weight 40, wherein the first tuning weight
body 140 in the example embodiment includes the first and second
sets 142, 144 of tuning weight bodies of the associated tuning
weight 40. Similarly, the third arc-shaped passageway portion 332
defined by the cylindrical body member 20 extends circumferentially
relative to the longitudinal axis L on the first side A of the
plane P bisecting the cylindrical body member 20 and containing the
longitudinal axis L. The third arc-shaped passageway portion 332 is
configured to receive a third tuning weight body 340 of the
associated tuning weight 40, wherein the third tuning weight body
340 in the example embodiment includes the fifth and sixth sets
342, 344 of tuning weight bodies of the associated tuning weight
40. Also similarly, the second arc-shaped passageway portion 232
defined by the cylindrical body member 20 extends circumferentially
relative to the longitudinal axis L on a second side B opposite
from the first side A of the plane P bisecting the cylindrical body
member 20 and containing the longitudinal axis L. The second
arc-shaped passageway portion 232 is configured to receive a second
tuning weight body 240 of the associated tuning weight 40, wherein
the second tuning weight body 240 in the example embodiment
includes the third and fourth sets 242, 244 of tuning weight bodies
of the associated tuning weight 40. Still further similarly, the
fourth arc-shaped passageway portion 432 defined by the cylindrical
body member 20 extends circumferentially relative to the
longitudinal axis L on the second side B of the plane P bisecting
the cylindrical body member 20 and containing the longitudinal axis
L. The fourth arc-shaped passageway portion 432 is configured to
receive a fourth tuning weight body 440 of the associated tuning
weight 40, wherein the fourth tuning weight body 440 in the example
embodiment includes the seventh and eighth sets 442, 444 of tuning
weight bodies of the associated tuning weight 40.
In accordance with an embodiment, the third arc-shaped passageway
portion 332 lies entirely on the first side A of the plane P
bisecting the cylindrical body member 20 and containing the
longitudinal axis L.
In accordance with an embodiment, the fourth arc-shaped passageway
portion 432 lies entirely on the second side B opposite from the
first side A of the plane P bisecting the cylindrical body member
20 and containing the longitudinal axis L.
In accordance with an embodiment, the third arc-shaped passageway
portion 332 lies entirely on the first side A of the plane P and
the fourth arc-shaped passageway portion 432 lies entirely on the
second side B opposite from the first side A of the plane P.
In accordance with an embodiment, none of the third arc-shaped
passageway portion 332 lies on the second side B opposite from the
first side A of the plane P bisecting the cylindrical body member
20 and containing the longitudinal axis L.
In accordance with an embodiment, none of the fourth arc-shaped
passageway portion 432 lies on the first side A opposite from the
second side B of the plane P bisecting the cylindrical body member
20 and containing the longitudinal axis L.
In accordance with an embodiment, none of the third arc-shaped
passageway portion 332 lies on the second side B of the plane P and
none of the fourth arc-shaped passageway portion 432 lies on the
first side A of the plane P.
It is to be appreciated that although the first and third
arc-shaped passageway portions 132, 332 lie entirely on the first
side A of the plane P bisecting the cylindrical body member 20 and
containing the longitudinal axis L, in a further embodiment some of
the first arc-shaped passageway portion 132 may extend into the
second side B opposite from the first side A of the plane P
bisecting the cylindrical body member 20 and, further, that one or
both of the ends of the first arc-shaped passageway portion 132 may
extend into the second side B opposite from the first side A of the
plane P bisecting the cylindrical body member 20, and further that
some of the third arc-shaped passageway portion 332 may extend into
the second side B opposite from the first side A of the plane P
bisecting the cylindrical body member 20 and, further, that one or
both of the ends of the third arc-shaped passageway portion 332 may
extend into the second side B opposite from the first side A of the
plane P bisecting the cylindrical body member 20.
It is still yet further also to be appreciated that although the
second and fourth arc-shaped passageway portions 232, 432 lie
entirely on the second side B of the plane P bisecting the
cylindrical body member 20 and containing the longitudinal axis L,
in a further embodiment some of the second arc-shaped passageway
portion 232 may extend into the first side A opposite from the
second side B of the plane P bisecting the cylindrical body member
20 and, further, that one or both of the ends of the second
arc-shaped passageway portion 232 may extend into the first side A
opposite from the second side B of the plane P bisecting the
cylindrical body member 20, and further that some of the fourth
arc-shaped passageway portion 432 may extend into the second side B
opposite from the first side A of the plane P bisecting the
cylindrical body member 20 and, further, that one or both of the
ends of the fourth arc-shaped passageway portion 432 may extend
into the second side B opposite from the first side A of the plane
P bisecting the cylindrical body member 20.
In the example embodiments the one or more arc-shaped groove
portions 30 defined by the cylindrical body member 20 of the
variable inertia flywheel apparatus 10 may be spaced apart from the
longitudinal axis L by one or more selected radii as may be
necessary and/or desired to effect, in combination with a selection
of the masses of the associated tuning weights 40 disposed within
the arc-shaped groove portions 30 a desired inertial characteristic
result of the flywheel body member. In this regard and with
continued reference to FIGS. 2-4, the first arc-shaped passageway
portion 132 is spaced from the longitudinal axis L by the first
radius R1, the second arc-shaped passageway portion 332 is spaced
from the longitudinal axis L by the second radius R2, the third
arc-shaped passageway portion 332 is spaced from the longitudinal
axis L by the third radius R3, and the fourth arc-shaped passageway
portion 432 is spaced from the longitudinal axis L by the fourth
radius R4.
In the example embodiment, the first and second radii R1, R2 are
the same and, accordingly, a mass placed in either of the first or
second arc-shaped passageway portions 132, 232 would have the same
inertial effect for tuning the flywheel apparatus of the variable
inertia flywheel system 1 of the example embodiments. Similarly in
the example embodiment, the third and fourth radii R3, R4 are the
same and, accordingly, a mass placed in either of the third or
fourth arc-shaped passageway portions 332, 432 would have the same
inertial effect for tuning the flywheel apparatus of the variable
inertia flywheel system 1 of the example embodiments. However, the
first arc-shaped passageway portion 132 may be spaced from the
longitudinal axis L by a first radius R1 that is different than
(greater than or less than) the second radius R2 of the spacing
between the second arc-shaped passageway portion 232 and the
longitudinal axis L. In this example embodiment the tuning weight
bodies of the associated tuning weights 40 placed in the first and
second arc-shaped passageway portions 132, 232 would be adjusted to
be provided having different inertial masses so that the combined
inertial effects of the weights and the spacings still provide a
balance on opposite sides of the plane A. In addition, the third
arc-shaped passageway portion 332 may be spaced from the
longitudinal axis L by a third radius R3 that is different than
(greater than or less than) the fourth radius R4 of the spacing
between the fourth arc-shaped passageway portion 432 and the
longitudinal axis L. In this example embodiment the tuning weight
bodies of the associated tuning weights 40 placed in the third and
fourth arc-shaped passageway portions 332, 432 would be adjusted to
be provided having different inertial masses so that the combined
inertial effects of the weights and the spacings still provide a
balance on opposite sides of the plane A.
As described above and as shown in the drawing Figures and in
particular as shown in FIG. 4, a first biasing member 150 of the
variable inertia flywheel apparatus 10 according to the example
embodiment is disposed in the first arc-shaped passageway portion
132 and a second biasing member 250 is disposed in the second
arc-shaped passageway portion 232. The first biasing member 150 is
operable to hold the first and second sets 142, 144 of tuning
weight bodies of the associated tuning weight 40 in respective
predetermined positions at opposite ends of the first arc-shaped
passageway portion 132. Similarly, the second biasing member 250 is
operable to hold third and fourth sets 242, 244 of tuning weight
bodies of the associated tuning weight 40 in respective
predetermined positions at opposite ends of the second arc-shaped
passageway portion 232. In further addition, a third biasing member
350 of the variable inertia flywheel apparatus 10 according to the
example embodiment is disposed in the third arc-shaped passageway
portion 332 and a fourth biasing member 440 is disposed in the
fourth arc-shaped passageway portion 432. The third biasing member
350 is operable to hold fifth and sixth sets 342, 344 of tuning
weight bodies of the associated tuning weight 40 in respective
predetermined positions at opposite ends of the third arc-shaped
passageway portion 332. Similarly, the fourth biasing member 450 is
operable to hold seventh and eighth sets 442, 444 of tuning weight
bodies of the associated tuning weight 40 in respective
predetermined positions at opposite ends of the fourth arc-shaped
passageway portion 432.
It is to be understood that in practice, the spherical objects that
are preferably tightly received in the one or more arc-shaped
groove portions so that they do not move, rattle, or otherwise
dislocate from their intended position(s) within the groove
portions during use of the flywheel system 1. The spherical objects
may be cooled to very low temperature such as my immersing them in
liquid nitrogen for example so that they may reduce in size by
shrinking before insertion into the groove portions, then allowed
to expand in situ after they are properly located to their
respective desired position(s) within the groove portions such as
by holding them in place by the one or more biasing members 150,
250, 350, 450 described above, for example.
As used herein, the singular forms "a", "an" and "the" are intended
to include the plural forms as well, unless the context clearly
indicates otherwise. Further, "comprises," "includes," and like
phrases are intended to specify the presence of stated features,
steps, operations, elements, and/or components, but do not preclude
the presence or addition of one or more other features, steps,
operations, elements, components, and/or groups thereof.
While the present disclosure has been illustrated and described in
detail in the drawings and foregoing description, such illustration
and description is not restrictive in character, it being
understood that illustrative embodiment(s) have been shown and
described and that all changes and modifications that come within
the spirit of the present disclosure are desired to be protected.
Alternative embodiments of the present disclosure may not include
all of the features described yet still benefit from at least some
of the advantages of such features. Those of ordinary skill in the
art may devise their own implementations that incorporate one or
more of the features of the present disclosure and fall within the
spirit and scope of the appended claims.
* * * * *